Reviewed and updated October 11, 2026 by the SearchSystems.net editorial team. Every office link was opened and checked against the office's own site between September 24, 2026 and October 11, 2026.
Yankton County, South Dakota, has about 24,000 residents (2024 Census Bureau estimate). The title to a parcel in Yankton County is in the deed records of the Register of Deeds and its taxable value is set by the Director of Equalization; what is built on it is a matter for the city or the county. This guide says who keeps each record and where the page for each office is.
This guide covers deeds, assessed values, evictions and court cases, records requests, directory links and common questions.
Related guides: Yankton County public records, Yankton County arrest records, Yankton County warrants, Yankton County criminal records, Yankton County court records, South Dakota arrest records and South Dakota inmate search.
Deeds, Mortgages and Liens in Yankton County
Who owns a parcel in Yankton County and what it sold for are in the deed records of the Register of Deeds, with every lien or mortgage against the land.
SearchSystems opened and checked the Register of Deeds' page at co.yankton.sd.us/custom/register-of-deeds (page title: Register of Deeds), phone (605) 260-4400, 321 W. 3rd St., Suite 205 Yankton, SD 57078, Monday through Friday 9:00am - 5:00 pm, which answered when SearchSystems opened it on September 30, 2026.
Assessed Values and the Tax Roll in Yankton County
The Director of Equalization sets the value each parcel in Yankton County is taxed on and keeps the parcel maps.
SearchSystems opened and checked the Director of Equalization's page at co.yankton.sd.us/custom/equalization (page title: Equalization), phone (605) 260-4400, 321 W 3rd St. Suite 203 Yankton, SD 57078, which answered when SearchSystems opened it on October 11, 2026.
Evictions and Court Cases About Land in Yankton County
Court cases about land from Yankton County, evictions among them, are filed in the Circuit Court for Yankton County.
The court records page SearchSystems verified for the county is at dakotaathome.sd.gov/search/3da3e7d8-6667-5b77-8182-19cb4c058890, phone 605-668-3080.
Asking a County Office for a Record
Under the South Dakota Open Records Law a county office must answer a request within 10 business days, and it may charge copying and staff time.
More Official Property and Land Records Pages for Yankton County
The SearchSystems directory, online since 1997, lists the official pages for Yankton County and South Dakota. These recorded document pages from its Yankton County listing were opened again on October 2, 2026 and each one still answers:
- Register of Deeds (dakotaathome.sd.gov)
Frequently Asked Questions
Who records deeds in Yankton County?
The Register of Deeds, at co.yankton.sd.us/custom/register-of-deeds, phone (605) 260-4400. Deeds, mortgages and liens on land in Yankton County are filed there, and the Director of Equalization (co.yankton.sd.us/custom/equalization) has the assessment records.
Who sets the assessed value of a property in Yankton County?
The Director of Equalization, whose page SearchSystems verified is at co.yankton.sd.us/custom/equalization.
Where are evictions from Yankton County filed?
In the Circuit Court for Yankton County. The file is public unless the court seals it.
Is this the official Yankton County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.